diff --git a/app/models/case_log.rb b/app/models/case_log.rb
index 2862eb087..2cb25397d 100644
--- a/app/models/case_log.rb
+++ b/app/models/case_log.rb
@@ -117,6 +117,81 @@ class CaseLogValidator < ActiveModel::Validator
     validate_other_field(record, "tenancy_type", "other_tenancy_type")
   end
 
+  def validate_other_household_members(record)
+    index = 0
+    number_of_other_members = record.household_number_of_other_members
+    partner = false
+
+    while index < number_of_other_members
+      
+      member_number = index+2
+      relationship = record["person_#{member_number}_relationship"]
+      age = record["person_#{member_number}_age"]
+      gender = record["person_#{member_number}_gender"]
+      economic_status = record["person_#{member_number}_economic_status"]
+
+      binding.pry
+      if relationship || age || gender || economic_status
+        if relationship.nil? || age.nil? || gender.nil? || economic_status.nil?
+          record.errors.add "person_#{member_number}_age", "If any of the person is filled out it must all be filled"
+        end
+      end
+
+      if age<1 || age>120
+        record.errors.add "person_#{member_number}_age", "Tenant #{member_number} age must be between 1 and 120 (i.e. infants must be entered as 1)"
+      end
+
+      if age>70 && economic_status != "Retired"
+        record.errors.add "person_#{member_number}_economic_status", "Tenant #{member_number} must be retired if over 70"
+      end
+
+      if gender=="Male" && economic_status == "Retired" && age<65
+        record.errors.add "person_#{member_number}_age", "Male tenant who is retired must be 65 or over"
+      end
+
+      if gender=="Female" && economic_status == "Retired" && age<60
+        record.errors.add "person_#{member_number}_age", "Female tenant who is retired must be 60 or over"
+      end
+
+      if age>70 && economic_status != "Retired"
+        record.errors.add "person_#{member_number}_economic_status", "Tenant #{member_number} must be retired if over 70"
+      end
+
+      if age<16 
+        if relationship != "Child - includes young adult and grown-up"
+          record.errors.add "person_#{member_number}_relationship", "Tenant #{member_number}'s relationship to tenant 1 must be Child if their age is under 16"
+        end
+        if economic_status != "Child under 16"
+          record.errors.add "person_#{member_number}_economic_status", "Tenant #{member_number} economic status must be Child under 16 if their age is under 16"
+        end
+      end
+
+      if relationship == "Partner"
+        if partner
+          record.errors.add "person_#{member_number}_relationship", "Tenant can not have multiple partners"
+        elsif age<16 || economic_status == "Child under 16"
+          record.errors.add "person_#{member_number}_relationship", "Tenant can not be tenant 1's partner if they are under 16"
+        else
+          partner = true
+        end
+      end
+
+      if relationship == "Child - includes young adult and grown-up"
+        if economic_status!="Unable to work because of long term sick or disability" || economic_status!="Other" || economic_status!="Prefer not to say"
+          record.errors.add "person_#{member_number}_economic_status", "This is not a valid economic status for a child"
+        end
+
+        if age>=16 && age<=19 
+          if economic_status != "Full-time student" || economic_status != "Prefer not to say"
+            record.errors.add "person_#{member_number}_economic_status", "If relationship is child and age is between 16 and 19 - tenant #{member_number} must be a full time student or prefer not to say."
+          end
+        end
+      end
+      
+      index = index+1
+    end
+  end
+
   def validate(record)
     # If we've come from the form UI we only want to validate the specific fields
     # that have just been submitted. If we're submitting a log via API or Bulk Upload